ASTM B139, ASTM B140, QQ-B-750, SAE J461
EN CuSn4Pb4Zn4 - BZ4 - CW456K
Available in continuous Wire-In-Coil or Small Coils
C54400 Phosphor Bronze is the finest bearing alloy that the industry has to offer. It is an extremely machinable alloy that is equalled by few in the wrought metal industry as a bearing alloy. When annealed, this metal can be bent, formed, blanked, and stamped.
Typical Uses for C54400 Phosphor Bronze "B-2" "Free Cutting":
ELECTRICAL: Electrical Connectors
INDUSTRIAL: Bushings, Gears, Pinions, Shafts, Valve Parts, Sleeve Bearings, Thrust Bearings, Screw Machine Products, Bearings, Thrust Washers
Sizes Available From NBM
SOLID BAR: 3/16" - 6" diameter
HEX BAR: 3/8" - 2" across the flats
SHEET AND PLATE: available upon request
| Cu | Fe | Pb | P | Sn | Zn | |
| Min/Max | Rem | 0.1 | 3.5 - 4.5 | 0.01 - 0.5 | 3.5 - 4.5 | 1.5 - 4.5 |
| Nominals | 88.0000 | - | 4.0000 | 0.2500 | 4.0000 | 4.0000 |
| Product Type | Spec |
| Bar | ASTM B103, B139, SAE J 463, J461 |
| Bearings and Bushings | MILITARY MIL-B-13501 |
| Plate | ASTM B103 |
| Rod | ASTM B139, SAE J 463, J461 |
| Shapes | ASTM B139 |
| Sheet | ASTM B103, SAE J 463, J461 |
| Strip | AMS 4520, ASTM B103, SAE J 463, J461 |
| Temper | Sect. Size | Cold Work | Type Min | Temp | Tensile Strength | YS 0.05% UL | YS 0.02% Offset | YS 0.005% Offset | Elong. | RH B | RH C | RH F | RH 30T | VH 500 | BH 500 | BH 3000 | Shear Strgth | Fatigue Strgth | Izod Impact Strgth |
| - | in. | % | - | F | ksi | ksi | ksi | ksi | % | B | C | F | 30T | 500 | 500 | 3000 | ksi | ksi | ft-lb |
| - | mm. | - | - | C | MPa | MPa | MPa | MPa | - | - | - | - | - | - | - | - | MPa | MPa | J |
| Flat Product | |||||||||||||||||||
| H02 | 0.04 | 68 | 58 | 40 | - | - | - | - | - | - | - | - | - | - | - | - | |||
| H02 | 1 | 0 | TYP | 20 | 400 | 276 | - | - | 24 | 68 | - | - | - | - | - | - | - | - | 0 |
| OS035 | 0.04 | 68 | 44 | 19 | - | - | - | - | - | - | - | - | - | - | - | - | |||
| OS035 | 1 | 0 | TYP | 20 | 303 | 131 | - | - | 50 | - | - | 65 | - | - | - | - | - | - | 0 |
| ROD | |||||||||||||||||||
| H04 | 0.5 | 68 | 75 | 63 | - | - | - | - | - | - | - | - | - | - | - | - | |||
| H04 | 12.7 | 35 | TYP | 20 | 517 | 434 | - | - | 15 | 83 | - | - | - | - | - | - | - | - | 0 |
| H04 | 1 | 68 | 68 | 57 | - | - | - | - | - | - | - | - | - | - | - | - | |||
| H04 | 25.4 | 25 | TYP | 20 | 469 | 393 | - | - | 20 | 80 | - | - | - | - | - | - | - | - | 0 |
| Product Property | US Customary | Metric |
| Coefficient of Thermal Expansion | 9.6 . 10-6 per oF (68-572 F) | 17.3 . 10 6? per å¡C (20-300 C) |
| Density | 0.32 lb/in3 @ 68 F | 8.89 gm/cm3 @ 20 C |
| Electrical Conductivity | 19 %IACS @ 68 F | 0.111 MegaSiemens/cm @ 20 C |
| Electrical Resistivity | 54.6 ohms-cmil/ft @ 68 F | 9.08 microhm-cm @ 20 C |
| Melting Point Liquid US | 1830 F | 999 C |
| Melting Point Solid US | 1700 F | 927 C |
| Modulas of Elasticity in Tension | 15000 ksi | 103400 MPa |
| Modulas of Rigidity | 5600 ksi | 38610 MPa |
| Specific Gravity | 8.89 | 8.89 |
| Specific Heat Capacity | 0.09 Btu/lb/å¡F @ 68 F | 377.1 J/kg . å¡K at 293 K |
| Thermal Conductivity | 50.0 Btu . ft/(hr . ft2 . å¡F) @ 68 F | 86.5 W/m . å¡K at 20 C |
| Joining Technique | Suitability |
| Brazing | Good |
| Butt Weld | Fair |
| Capacity for Being Cold Worked | Good |
| Coated Metal Arc Welding | Not Recommended |
| Gas Sheilded Arc Welding | Not Recommended |
| Machinability rating | 80 |
| Oxyacetylene Welding | Not Recommended |
| Seam Weld | Not Recommended |
| Soldering | Excellent |
| Spot Weld | Not Recommended |
| End Product | Specification |
| Bar | ASTM B103, B139, SAE J 463, J461 |
| Bearings and Bushings | MILITARY MIL-B-13501 |
| Plate | ASTM B103 |
| Rod | ASTM B139, SAE J 463, J461 |
| Shapes | ASTM B139 |
| Sheet | ASTM B103, SAE J 463, J461 |
| Strip | AMS 4520, ASTM B103, SAE J 463, J461 |
